Followed by the RefImage.php which will serve to hold multiple Images. This way you don't need to worry about blank fields, it will loop through existing ones wether you have 1 RefImage or 100http://pastie.org/2237304

Then in your RefrenzenPage.ss you could call all preview images from the ReferenzPages underneath it. Since the PreviewImage is held on the ReferenzPage you can just call it with Children to build your menu